<template>
  <div class="app-container">
    <el-form
      :model="queryParams"
      ref="queryForm"
      size="small"
      :inline="true"
      v-show="showSearch"
      label-width="68px"
    >
      <el-select
        v-model="queryParams.courseId"
        placeholder="请选择负责课程"
        clearable
      >
        <el-option
          v-for="item in this.course"
          :key="item.courseId"
          :label="item.courseName"
          :value="item.courseId"
        ></el-option>
      </el-select>
      <el-form-item>
        <el-button
          type="primary"
          icon="el-icon-search"
          size="mini"
          @click="handleQuery"
          >搜索</el-button
        >
        <el-button icon="el-icon-refresh" size="mini" @click="resetQuery"
          >重置</el-button
        >
      </el-form-item>
    </el-form>

    <el-row :gutter="10" class="mb8">
      <el-col :span="1.5">
        <el-button
          type="primary"
          plain
          icon="el-icon-plus"
          size="mini"
          @click="handleAdd"
          v-hasPermi="['course_design:course-teacher:add']"
          >新增</el-button
        >
      </el-col>
      <!-- <el-col :span="1.5">
        <el-button
          type="success"
          plain
          icon="el-icon-edit"
          size="mini"
          :disabled="single"
          @click="handleUpdate"
          v-hasPermi="['course_design:course-teacher:edit']"
          >修改</el-button
        >
      </el-col> -->
      <el-col :span="1.5">
        <el-button
          type="danger"
          plain
          icon="el-icon-delete"
          size="mini"
          :disabled="multiple"
          @click="handleDelete"
          v-hasPermi="['course_design:course-teacher:remove']"
          >删除</el-button
        >
      </el-col>
      <el-col :span="1.5">
        <el-button
          type="warning"
          plain
          icon="el-icon-download"
          size="mini"
          @click="handleExport"
          v-hasPermi="['course_design:course-teacher:export']"
          >导出</el-button
        >
      </el-col>
      <right-toolbar
        :showSearch.sync="showSearch"
        @queryTable="getList"
      ></right-toolbar>
    </el-row>

    <el-table
      v-loading="loading"
      :data="course_teacherList"
      @selection-change="handleSelectionChange"
    >
      <el-table-column type="selection" width="55" align="center" />
      <el-table-column label="指导教师工号" align="center" prop="userName" />
      <el-table-column label="指导教师姓名" align="center" prop="nickName" />
      <el-table-column label="指导人数" align="center" prop="studentNum" />
      <el-table-column
        label="操作"
        align="center"
        class-name="small-padding fixed-width"
      >
        <template slot-scope="scope">
          <!-- <el-button
            size="mini"
            type="text"
            icon="el-icon-edit"
            @click="handleUpdate(scope.row)"
            v-hasPermi="['course_design:course-teacher:edit']"
            >修改</el-button
          > -->
          <el-button
            size="mini"
            type="text"
            icon="el-icon-delete"
            @click="handleDelete(scope.row)"
            v-hasPermi="['course_design:course-teacher:remove']"
            >删除</el-button
          >
        </template>
      </el-table-column>
    </el-table>

    <pagination
      v-show="total > 0"
      :total="total"
      :page.sync="queryParams.pageNum"
      :limit.sync="queryParams.pageSize"
      @pagination="getList"
    />

    <!-- 添加或修改课程-教师关联对话框 -->
    <el-dialog :title="title" :visible.sync="open" width="500px" append-to-body>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="指导教师" prop="teacherId">
          <el-select
            v-model="form.teacherId"
            placeholder="请选择指导教师"
            clearable
          >
            <el-option
              v-for="item in this.teacher"
              :key="item.userId"
              :label="item.userName + '-' + item.nickName"
              :value="item.userId"
            ></el-option>
          </el-select>
        </el-form-item>
      </el-form>
      <el-form ref="form" :model="form" :rules="rules" label-width="80px">
        <el-form-item label="指导人数" prop="studentNum">
          <el-input v-model="form.studentNum" placeholder="请输入指导人数" />
        </el-form-item>
      </el-form>
      <div slot="footer" class="dialog-footer">
        <el-button type="primary" @click="submitForm">确 定</el-button>
        <el-button @click="cancel">取 消</el-button>
      </div>
    </el-dialog>
  </div>
</template>

<script>
import {
  listCourse_teacher,
  getCourse_teacher,
  delCourse_teacher,
  addCourse_teacher,
  updateCourse_teacher,
  getCourseListChargedBySelf,
  listByRole,
} from "@/api/coursedesign/course_teacher";

export default {
  name: "Course-teacher",
  data() {
    return {
      // 遮罩层
      loading: true,
      // 选中数组
      ids: [],
      // 非单个禁用
      single: true,
      // 非多个禁用
      multiple: true,
      // 显示搜索条件
      showSearch: true,
      // 总条数
      total: 0,
      // 课程-教师关联表格数据
      course_teacherList: [],
      // 弹出层标题
      title: "",
      // 是否显示弹出层
      open: false,
      // 查询参数
      queryParams: {
        pageNum: 1,
        pageSize: 10,
        courseId: null,
      },
      // 表单参数
      form: {},
      // 表单校验
      rules: {},
      // 负责课程
      course: [],
      // 指导教师
      teacher: [],
    };
  },
  created() {
    this.getList();
    this.handleCourseListChargedBySelf();
    this.getListByRole();
  },
  methods: {
    /** 查询课程-教师关联列表 */
    getList() {
      this.loading = true;
      listCourse_teacher(this.queryParams).then((response) => {
        this.course_teacherList = response.rows;
        this.total = response.total;
        this.loading = false;
      });
    },
    // 取消按钮
    cancel() {
      this.open = false;
      this.reset();
    },
    // 表单重置
    reset() {
      this.form = {
        teacherId: null,
        courseId: null,
        studentNum: null,
        createBy: null,
        createTime: null,
        updateBy: null,
        updateTime: null,
        delFlag: null,
      };
      this.resetForm("form");
    },
    /** 搜索按钮操作 */
    handleQuery() {
      this.queryParams.pageNum = 1;
      this.getList();
    },
    /** 重置按钮操作 */
    resetQuery() {
      this.resetForm("queryForm");
      this.handleQuery();
    },
    // 多选框选中数据
    handleSelectionChange(selection) {
      this.ids = selection.map((item) => item.teacherId);
      this.single = selection.length !== 1;
      this.multiple = !selection.length;
    },
    /** 新增按钮操作 */
    handleAdd() {
      this.reset();
      this.open = true;
      this.title = "添加课程-教师关联";
    },
    /** 修改按钮操作 */
    handleUpdate(row) {
      this.reset();
      const teacherId = row.teacherId || this.ids;
      getCourse_teacher(teacherId).then((response) => {
        this.form = response.data;
        this.open = true;
        this.title = "修改课程-教师关联";
      });
    },
    /** 提交按钮 */
    submitForm() {
      this.$refs["form"].validate((valid) => {
        if (valid) {
          if (this.queryParams.courseId === null) {
            this.$modal.msgError("请选择课程！");
            return;
          }
          this.form.courseId = this.queryParams.courseId;
          addCourse_teacher(this.form).then((response) => {
            this.$modal.msgSuccess("新增成功");
            this.open = false;
            this.getList();
          });
          // if (this.form.teacherId != null) {
          //   updateCourse_teacher(this.form).then((response) => {
          //     this.$modal.msgSuccess("修改成功");
          //     this.open = false;
          //     this.getList();
          //   });
          // } else {
          //   addCourse_teacher(this.form).then((response) => {
          //     this.$modal.msgSuccess("新增成功");
          //     this.open = false;
          //     this.getList();
          //   });
          // }
        }
      });
    },
    /** 删除按钮操作 */
    handleDelete(row) {
      const teacherIds = row.teacherId || this.ids;
      this.$modal
        .confirm(
          '是否确认删除课程-教师关联编号为"' + teacherIds + '"的数据项？'
        )
        .then(function () {
          return delCourse_teacher(teacherIds);
        })
        .then(() => {
          this.getList();
          this.$modal.msgSuccess("删除成功");
        })
        .catch(() => {});
    },
    /** 导出按钮操作 */
    handleExport() {
      this.download(
        "course_design/course-teacher/export",
        {
          ...this.queryParams,
        },
        `course-teacher_${new Date().getTime()}.xlsx`
      );
    },
    /** 查询自己负责的课程信息（负责教师） */
    handleCourseListChargedBySelf() {
      getCourseListChargedBySelf().then((response) => {
        this.course = response.data;
      });
    },
    /** 查询具有某角色的所有用户 */
    getListByRole() {
      listByRole("teacher").then((response) => {
        this.teacher = response.data;
      });
    },
  },
};
</script>
